I have no horse in this race, however one need only look at the NYIIX outages list to see how well the Brocade/Extreme SLX platform works on at-scale service provider networks...
On Thu, Nov 1, 2018 at 2:55 PM Blake Hudson <[email protected]> wrote: > > > Chris Welti wrote on 11/1/2018 10:03 AM: > > Nicolas Fevrier has a very detailed blog post on how Cisco handles the > > prefixes on their Broadcom Jericho based NCS 5500 gear. > > https://xrdocs.io/cloud-scale-networking/tutorials/2017-08-03-understanding-ncs5500-resources-s01e02/ > > > > I'm pretty sure the principle is more or less the same for the Jericho > > based platforms on Arista and Extreme. > > > > Best regards, > > Chris > > I love the nitty gritty detail in this author's post and I'm glad he > concludes by stating clearly that while the base card (spec sheet says: > "On-chip tables for 256K IPv4 or 64K IPv6 routes" and "On-chip tables > for 786K IPv4 host routes, MAC, and labels") can actually hold a full > BGP table today when configured appropriately, Cisco still recommends > the scale cards for that application (spec sheet says: "FIB scale up 2M > IPv4 or 512K IPv6 routes" and "On-chip tables for 786K IPv4 host routes, > MAC, and labels"). > > I do have to wonder about the internal expansion of each /23 route into > two /24 routes in their FIB algorithm, as I would have thought Cisco > would have attempted to go the opposite way, but I'm sure Cisco has > their reasons.
